george allen by just two windows. with races all tied up in places like nevada, arizona and montana, north dakota, wisconsin and connecticut, it could be a nail-biter on tuesday night. >>> and it will be a nail-biter waiting for the presidential election results. we're two days out and experts are predicting a very long election night. the president's senior advisory says mr. obama and mr. romney are in neck, so he expects tallying of voting results to go well into the morning. a poll has the president just one point ahead of romney, 48% to 47%. and for a look at what states could make all the difference in the outcome... >> reporter: california almost certain to vote for president obama. voters in the red states almost certain to go for governor romney. arizona and north carolina leaning romney. new mexico, minnesota and pennsylvania are leaning obama. so what do you have left? true toss-up states, we will color them yellow. nevada, colorado, iowa, wisconsin, ohio, virginia, new hampshire, and florida. and check out how close the latest polling numbers are in the yellow swing late.